Switch.



G. E. PALMER.

SWIT H. APPLIGATION FILED JUNE 25, 1910.

' 984,238, 4 Patented Feb. 14, 1911.

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, llllll GRANVILLE E. PALMER, OF WINCHESTER, MASSACHUSETTS.

SWITCH.

Specification of Letters Patent.

Patented Feb. 14., 1911.

Application filed June 25,1910. Serial No. 568,785.-

To all whom it may concern:

Be it known that I, GRANVILLE E. PALMER, a citizen of the United States,residing at lVinchester, county of Middlesex, Massachusetts, haveinvented certain new and useful Improvements in Switches, of which thefollowing is a full, clear, and exact description.

My invention relates to improvements in fuse switches, and has for itsobject to provide a new and improved switch device fused on one sideonly, which can be adjusted so that line wires can be led in from eitherside to the switch proper, and the service wires can be led off from theother side without crossing of wires, the fuses of the device beinginterposed between. the line wires and the switch proper.

The following is a description of an embodiment of my invention,reference being had to the accompanying drawings, in which- Figure lshows a front elevation of the device without the usual cover. Fig. 2shows a View of the same, looking upward, the base and easing being insectionon the line :c'.v Fig. 1, without thehandle and supplementalguide. Fig. 3 shows a front elevation of the device with the face plateremoved and the switch arms being in off position. Figs. 4'. and Showdetails. Fig. 6 shows diagrammatically the parts of ,Fig. 1, with theface plate reversed.

Referring more particularly to the drawings, 1 representsa base block,of slate or other suitable insulating material, within a casing 2 havingport plates 3 and 4: for the line. and service. conductors 3,-'+1.

5-5 represent switch contacts securely mounted on the base block 1 forcontrolling one side of the circuit, and 6-45 are contacts securelymounted on the base block 1 for controlling theother side of thecircuit.

7 -8 are switch arms having ends made up ofleaf springs and adapted toengage with the contacts 5-5 and 66' respectively. The switch arms 7 -8are carried by a rod 9 having a pin 9, the arms being mounted thereon soas to be insulated therefrom.

This rod 9 is supported by the guide 10 having a slot 10 for the pin 9,which acts to keep the rod from turning. The rod 9 passes throu h asupplemental guide 11 se-' cured to the liase 1 at the bottom of thecase 2. This supplel-nentalguide 11-has a longit-udinal slot 12 (Fig. 5)therein, adapted toreceire a pin 13 carried by a revoluble supplementalextension 13 of the rod 9 mounted by means of a connector 13 so as toturn axially upon said rod.

14 is a handle attached to the extension 13.

\Vhen the rod is forced upward by the handle 1 1 so that arms 7-8 engagetheir contacts 55 and 6-6, the pin 13 is out of the slot 12, and uponturning the extension 13 the pin 13 is turned away from the slot 12so,as to engage the upper surface of the guide 11 and hold the arms 78in en gagement with their contacts.

The extension 13 is provided with two angularly displaced faces, one ofwhich bears the word On and the other bears the word Off, the formerappearing before an opening 15 in the supplemental guide 11 when the pin13 isturned so as to lock the switch arms in engagement with thecontacts, as shown in Fig. 1, the word Off appearing before said openingwhen the pin 13 is in said slot- 12 and the rod is lowered so as tobring said switchv arms 7 and 8 out of engagement with their contacts,as 111 Fig. 3. y

The contacts 5-5' and 6-6 are each provided with two equally spacedscrew holes 16-16 and 17 17; Resting upon the con t-acts is a slateface-plate 18 containing four holes. The holes through the face-plate 18are so located that the screws S-SSS may be passed into the holes 16-16and 17+ 17 when the faceplate is in one position, and into-the holes16'-16-1717 when the face-plate is in the other position. The holes 1616and 17-17 and the screws S S are preferably larger than the holes 1616and 1717 and screws S"S' so as not to be interchangeable.

19-19 are two circuit terminals having securing screws 19 therefor,which terminals, when the face-plate 18 is in the first position, arescrewed to the blocks 56' by having their screws engage the holes 1'('-17', and when it is in the second position are screwed to the contacts 5and 6 by having their screws enter the screw holes 16- 16 in theterminals 5 and 6.

The faceplate 18 also carries two plates or fuse terminals 20-20, towhich c rcuit terminals 2121 are secured by screws 22-22f. These platesorfuse terminals 2.0-20' have binding posts 23-23. The plate 18 alsocarries plates or fuse termlnals 24-24:, through which the screws S-Spass contacts to which they are connected. These plates or fuseterminals have binding screws 2525'. Between the screws 23-25 and 23525, fuses 2626 are secured.

f the line terminals are located to the lieft of the fuse, theface-plate 18 is mounted ign the left hand position, as shown in Fig. 1,the line-wires being secured to the fuse terminals 20 and 20 by thescrews 22--22.

The serviceterminals 19-49 are secured to the terminals 5 and 6 by thescrews 19' 19. In this position the current in' one lead passes first tothe fuse terminal 20, then through the fuse 26, plate 24, contact 5,

switch arm 7, contact 5 to the service line I terminal 19. The circuitthrough the other main passes to the fuse terminal 20, the fuse 26,plate 24, contact 6, switch arm 6, contact 6, to the service terminal19', in this way passing through the fuses 2626 beh fore passing throughthe switch arms 7 and 8.

When the service mains'are on the right, the face-plate 18 is removedand turned through an angle of 180 and secured by assin its screws intothe holes 1617-- l6"1 the line terminals being connected as before tothe fuse terminals 20 and 20 and the service terminals being connected Ito the contacts 5 6 by the holes 16-16, as

shown in Fig. 6. For clcarness the'fuses 26-26 arehere shown in dots. Inthis case the circuit through one conductor is through the plate 20,fuse 26, plate 24, contact 5, switch arm 7, contact 5 to the service cirhit. The other circuit is through the;

main to the plate 20, fuse 26, plate 24;,-

6', switch arm 8, contact 6 to the. r service main. This adjustment per-I mi ts of leading the circuit iz-lirough the fuse switch withoutcrossigflany conductors and admits of the placing 'o'f the fuses so thatthe current passes through the fuses before passing through the switch.

The proyf of two holes in each switch terminal, one of which is alwaysidle, the idle one being covered by the top plate, makes it impossibleto connect the switch in circuit without having the circuit fused eitherbefore or after the switch, and yet enables the fuse plate to be turnedso as to place the fuses before the switch.

The' contacts 6'6 are secured to the base 1 by screws 3030 passingupward through the base into the bottoms-:of'jthe holes 16- cured in asimilar manner, The connector. 13 1s fixed 111 posltlon on a set ofswitch terminals mounted thereon,

a switch arm therefor, a reversible face plate above said switchterminals and supportedthereby, a pair of fuse terminals on said plate,one of which fuse terminals is connected to*a corresponding switchterminal and adapted to be connected to the other switch terminal uponreversal of said plate, a circuit terminal, detachably connected to theother of said fuse terminals and adapted to .be connected to said firstswitch terminal, a circuit terminal detachably connected to said otherswitch terminal and adapted to be connected to said other fuse terminalupon such reversal, and a fuse between said fuse terminals.

2. The combination of a supporting base, two sets of switch terminalsthereon, switch arms therefor, a reversible face plate above said switchterminals and supported thereby, two pairs of fuse terminals on saidplate, two of which fuse terminals, one of each pair, are connected tocorresponding members of saidpairs of switch terminals and adapted to beconnected to the other members upon reversal of said plate, circuit terminals detaohably connected to the other two of each pair of fuseterminals respectively and adapted to be connected to saidcorrespondingniembers respectively, circuit terininals detachablyconnected to the other switch terminals respectively and adapted to 'beconnected to said other two fuse terminals respectivel upon suchreversal, and fuses between eac1 pair of fuse termlnals. 3'. Thecomblnatlon ofa supporting base,

two sets of switch terminals thereon, switcharms therefor, a reverslbleface plate above said switch terminals and supported thereby, two pairsof fuse terminals on said plate, two of which fuse terminals, one ofeach pair, are connected to corresponding menr bers of said pairs ofswitch terminals and adapted to be connected to the other members uponreversal of said plate, circuit'terminalsdetachably connected to theother two of each air of fuse terminals respectively and a apted to beconnected to said corresponding members respectively, circuit beconnected to sai terminals detachably connected to the other switchterminals respectively and adapted to other'two fuse termiof each pairof fuse pair, are connected bers of said pairs of swltch termmals and Jnals respectively upon such reversal, fuses between each pair of fuseterminals, and

means for securing said face plate to said other switch termmals. r

4. The combination of a supporting base, two sets of switch terminalsthereon, switch arms therefor, a'reversible face plate above said switchterminals and supported thereby, two' pairs of fuse terminals on saidplate, two of which fuse terminals, one of each to correspondingmemadapted to be connected to the other members upon reversal of saidlate, circuit terminals detachably connecte to the other two terminalsrespectively and adapted to be connected to said corresponding membersrespectively, circuit terminals detachably connected to the other switchterminals respectively and adapted to---- be connected to said other twofuse terminals respectively upon such reversal, fuses be- I tween eachpair of fuse terminals, and a common means for actuating said switcharms."

5. The combination of a supporting base, two sets of switch terminalsthereon, switch arms therefor, a reversible face plate above said switchterminals and supported thereby, two pairs of fuseterminals on jsaidplate, two of which fuse terminals, one of each pair, are connected-tocorresponding members of said pairs of switch terminals and adapted tobe connected to the other members upon, reversal of said late, circuitterminals detachably connecte to the other two of each pair of fuseterminals res ectively and adapted to be connected to sald correspondingmembers respectively, circuit terminals detachab ly connected to theother switch terminals respectively and adapted to' be connected to saidother twofuse terminals respectively upon such reversal, fuses betweeneach pair of fuse terminals, a common means for actuating said switcharms, and means for locking said switch arms in engagement with saidswitch terminals.

6. The combination of a supporting base, two sets of switch terminalsthereo'n, switch arms therefor, a reversible face plate above saidswitch terminals and supported thereby,

c osed, and means for two pairs of fuse terminals on said plate, two ofwhich fuse terminals, one of each pair, are connected to correspondingmembers of said pairs of switch terminals and adapted to be connected tothe other members upon reversal of said plate, circuit terminalsdetachably connected to the other two of each pair of fuse terminalsrespectively and adapted to be connected to said corresponding membersrespectively, circuit terminals detachably connected to the other switchterminals respectively and adapted to be connected to said other twofuse terminals respectively upon such reversal, fuses between each pairof fuse terminals, a rod for actuating both of said switch arms, arevoluble extension from said rod, means on said extension for lockingsaid rod so as to hold said arms in engagement with said switchterminals, and indicating means on said revoluble extension.

7 The combination of a base, switch contacts secured thereto, a switcharm engaging therewith, a longitudinally movable bar carrying saidswitch arm for moving it into and out of engagement with said contacts,

an extension upon said bar having indicating faces, a member having anopening for show-" ing one of said faces when the switch is 0 en and theother face when said switch is holding the switch arm in closedposition.

8. The combination of a tacts secured thereto, therewith, alongitudinally movable bar carrying said switch arm for moving it intoand out of engag ment with said contacts, a revoluble extension .uponsaid bar having angularly displaced indicating faces, amember having anopening for showing one of said faces when the switch is open and theother face when said switch is closed, pi'n upon said revoluble memberengaging an abutment on said member when said extension is turned aftersaid arm has engaged said contacts. a

' GRANVILLE E. PALMER.

Witnesses:

L. S. JAMES,

H. B. Baownnm.

base, switch cona switch arm engaging anda

